DIN 2093 Belleville Disc Spring | German Standard Conical Disk Spring

Product overview

DIN 2093 is German standard Belleville disc spring with conical dish structure, widely used for bolt preloading, axial buffering and anti-loose fastening in compact installation space. Produced per EN10132-4 standard from premium 65MN and C67S spring steel after integral quenching & tempering heat treatment. It features high load capacity with tiny compression stroke, adjustable stiffness via serial/parallel stacking, excellent fatigue resistance and stable elastic performance, ideal for heavy machinery, automotive, hydraulic and precision equipment assembly.

Material & Surface Treatment

English：All DIN2093 disc springs adopt 65Mn and C67S spring steel complying with EN10132-4 specification, core raw materials for conventional carbon steel disc spring. C67S（1.1231 European spring steel）: Carbon content 0.65%~0.73%, fine grain structure, stable elastic recovery after heat treatment, superior flatness, preferred for thin-spec small-size disc springs (t＜3mm) with high precision demand. 65Mn domestic spring steel: Mn element enriched (0.9~1.2%Mn), outstanding hardenability and impact resistance, cost-effective, dominant for medium & thick thickness industrial disc springs, fit for heavy-load dynamic working condition. All blanks go through stamping → quenching → tempering → shot blasting deburring full processing. Standard surface finish is phosphating for wear resistance and long-term rust prevention; optional black oxide, zinc plating per customer's requirement.

Features & Advantages

• Standard Compliance：Strictly produced per DIN2093 & EN10132-4, precise dimensional tolerance, matching standard installation inner/outer diameter and groove size. • High Load Compact Design：Bear huge axial force with tiny compression space, save installation layout compared with ordinary coil springs. • Flexible Combination：Single/series/parallel/mixed stacking freely adjust load and stroke, flexible to customize elastic parameters for different equipment. • Superior Elasticity & Fatigue：65Mn/C67S after precise heat treatment, stable stiffness, long cycle service life, not easy to fatigue failure under continuous alternating vibration. • Anti-loose & Compensation：Offset thermal expansion, component creep and assembly gap, sustain constant bolt preload to avoid connection loose from shock and temperature change. • Diversified Surface：Standard phosphating anti-rust, optional blackening/zinc coating for different corrosive environments.

Application

DIN2093 65Mn & C67S disc springs are widely used for bolt preloading and buffering in automotive powertrain, gearbox, hydraulic cylinder, high-pressure valve, injection molding mold, engineering machinery, railway fastener, transformer busbar, wind power equipment, compressor, precision automation fixture and heavy-duty pump body, focusing on anti-loose pre-tightening and shock absorption of key bolt connections.